BQ24171 Datasheet, PDF (4/35 Pages) Texas Instruments – JEITA Compliant Stand-Alone Switch-Mode Li-Ion and Li-Polymer Battery Charger with Integrated MOSFETs and Power Path Selector

bq24171
SLUSAF2A – FEBRUARY 2011 – REVISED MAY 2011
TYPICAL APPLICATIONS
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12V Adapter
R_IN
2
C_IN
2.2?
VBAT
D2
D1
R1
10
Q1
Q2
R_AC: 10m
C12: 0.1µ
C11: 0.1µ
R11
4.02k
R12
4.02k
C2: 1µ
VREF
R4
100k
R5
22.1k
ACN
ACP
CMSRC
PVCC
BATDRV
VREF
R2
232k
R3
32.4k
ACDRV
VREF
SW
bq24171
ISET
BTST
ACSET
REGN
R6
1000k
R7
100k
R_T
103AT
VREF
R8
2.2k
R9
6.8k
AVCC
C1
1µ
C3: 0.1?
OVPSET
TTC
PGND
SRP
SRN
R10
1.5k
VREF
D3
TS
FB
THERMAL
STAT _PAD
System
C4: 10µ
R14
Q3
1k
L: 3.3?H _RSR:10m
VBAT
C5
0.047?
C7
0.1?
C6
1?
C8
0.1?
C9, C10
10? 10?
R2
299 kW
R2
100 kW
Figure 1. Typical Application Schematic (12V input, 2 cell battery 8.4V, 2A charge current, 0.2A
pre-charge/termination current, 3A DPM current, 18V input OVP)
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